Handlers

Summary

Without a doubt, the PHP5/ZE2 object model is more complex than its PHP4/ZE1 predecessor. After seeing all of the feature and implementation details in this chapter, you're probably a bit overwhelmed by the volume of it all. Fortunately, the layers that make up OOP within PHP enable you to pick and choose the pieces appropriate to your task and leave the rest alone. Find a good comfort level and start working upwards in complexity; the rest will follow.

Now that all of PHP's internal data types have been covered, it's time to return to an earlier topic: the request life cycle. In the next two chapters, you'll add internal state to your extension through the use of thread-safe globals, define custom ini settings, declare constants, and offer superglobals to userspace scripts using your extension.